Q. Is this really as harmful as you think?
A. Go to your parents house, your grandparents house etc and look at their Windows PC, look at the installed software in the past year, and try to use the device. Run some antivirus scans. There’s no way this implementation doesn’t end in tears — there’s a reason there’s a trillion dollar security industry, and that most problems revolve around malware and endpoints.
As reasonable the concerns are… it seems like there’s quite a bit of fearmongering over software and hardware that haven’t even really gotten into the mainstream yet.
I heard this same argument from people all the time. Until it affects you in a meaningful way to change your mind, it’ll be too late.